Fluoropolymer NMR Tube Caps • 3mm • 50 Pack SKU TC-3-PTFE-50PK $257.63 Available to Order Quantity -+ Add to Cart Details Redesigned Fluoropolymer NMR Tube Caps 3 mm50 PackWhiteRedesigned tapered fluoropolymer closure system that works together with our fire-polished tube... Details Back DetailsRedesigned Fluoropolymer NMR Tube Caps3 mm50 PackWhiteRedesigned tapered fluoropolymer closure system that works together with our fire-polished tube ends, offering superior sealing and sample integrity, preventing sample loss even during temperature gradients.